.d-box {
    width: 100%;
    height: 100%;
    text-align: center;
    padding-top: 10px;
}

.d-box h2 {
    color: #fff;
    padding-top: 100px;
    width: 410px;
    font-size: 44px;
    line-height: 65px;
    text-align: center;
    font-family: 微软雅黑;
    margin: auto;
}

.d-box button {
    width: 160px;
    height: 40px;
    margin: 20px;
    background-image: url(https://cdn.dancf.com/iliad/dist/prod/577/dist/images/3f567949-fd02-4f83-9a72-6071df71cbf8.webp);
    background-position: 0 0;
    background-size: 100% 100%;
}

.d-box .d-sp {
    width: 100%;
    height: 60%;
}

.d-box video {
    width: 60%;
    border-radius: 15px;
    margin-top: 20px;
}